ACS Applied Nano Materials,
Journal Year:
2024,
Volume and Issue:
7(24), P. 28186 - 28196
Published: Dec. 11, 2024
The
information
encryption
and
decryption,
using
optical
principles
techniques,
are
of
significant
importance
to
extensive
anticounterfeiting
applications,
ranging
from
tags,
security
authentication,
image
watermarking
decorative
applications.
Owing
the
antiphotobleaching
capability
exceptional
ease
precept,
structural
materials,
such
as
holographic
gratings,
have
been
employed
worldwide
for
encryption,
achieved
long-term
commercial
success.
However,
most
materials
methodologies
can
be
readily
imitated
or
copied
in
recent
years.
Herein,
this
study
reports
an
innovative
strategy
realize
decryption.
A
roll-to-roll
compatible
self-assembly
methodology
is
developed
fabricate
macroporous
poly(ethoxylated
trimethylolpropane
triacrylate)
(poly(ETPTA))
photonic
crystals.
2-Hydroxyethyl
methacrylate
monomer/ethanol
mixtures
then
utilized
inks
designing
building
chromogenic
patterns
onto
poly(ETPTA)
scaffold,
followed
by
polymerization
monomers.
Upon
exposure
water
common
chemical
vapors,
swelling
poly(2-hydroxyethyl
methacrylate)
(poly(HEMA))
coating
layer
brings
about
a
drastic
color
change
nanostructured
patterns.
dependences
corresponding
reflection
peak
shift
on
vapor
partial
pressure,
poly(HEMA)
thickness,
pore
size
response
time,
reusability
also
investigated
research.
Advanced Materials Technologies,
Journal Year:
2024,
Volume and Issue:
unknown
Published: Aug. 3, 2024
Abstract
Structural
color
is
a
remarkable
physical
phenomenon
that
exists
widely
in
nature.
Unlike
traditional
rendering
methods,
they
are
realized
mainly
through
micro/nanostructures
interfere,
diffract,
scatter
light,
and
exhibit
long‐life
environmental‐friendly
effects.
In
nature,
few
organisms
use
their
color‐changing
system
to
transmit
information,
such
as
courtship,
warning,
or
disguise.
Meanwhile,
some
natural
inorganic
minerals
can
also
structural
colors.
Learning
from
scientists
have
achieved
large‐scale
design
manufacturing
technology
for
artificial
photonic
crystals.
Photonic
crystals
unique
microstructure
forms
band
gap
under
the
action
of
periodic
potential
field,
consequently
causing
Bragg
scattering
due
arrangement
different
refractive
index
media
within
them.
Because
apparent
ability
form
local
photons
at
crystal
defects,
been
extensively
studied
recent
years
broad
application
prospects
fibers,
optical
computers,
chips,
other
fields.
this
review,
research,
properties,
applications
presented,
well
insight
into
future
developments
The
transition
of
material
transparency
induced
by
mechanical
stimulation
plays
a
crucial
role
in
information
encryption,
anti-counterfeiting,
and
smart
windows.
However,
developing
multifunctional
composite
film
that
simultaneously
possesses
high
elasticity
sensitivity,
low
energy
consumption,
reusability
remains
significant
challenge.
In
this
work,
homogeneous
photonic
crystal
SiO2
were
modified
commercial
available
coupling
agent
KH570,
enabling
it
to
be
chemically
bonded
the
PDMS
polymer
networks,
which
enhanced
interfacial
interaction
allowed
periodic
structure
return
its
original
state
effectively
both
before
after
stretching.
After
undergoing
200
cycles
testing,
exhibited
dissipation,
with
transmittance
maintaining
stability
within
range
90%
20%.
At
-50
°C,
maximum
loss
factor
was
~0.24,
indicating
retained
resilience
even
under
temperature.
candidate
for
window
supply
only
force.
Furthermore,
we
adopted
advanced
imprinting
technology,
utilizing
selectively
designed
molds
embed
arbitrary
encrypted
information.
By
controlling
duration
5
seconds,
30
seconds
80
achieved
differentiated
displays
same
strain
conditions
on
single
film.
Therefore,
work
can
provide
new
insights
into
fields
such
as
windows,
sensing.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(30), P. 39876 - 39885
Published: July 20, 2024
Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)
(PEDOT:PSS)
has
received
tremendous
attention
in
the
energy
field
owing
to
its
high
conductivity,
ease
of
processing,
biocompatibility,
and
low
cost-effectiveness.
Combining
PEDOT:PSS
photonic
crystals
(PCs)
is
expected
promote
development
high-performance
optoelectronic
devices.
The
conductivity
at
present
can
only
be
measured
through
specific
equipment,
visualization
integration
still
remains
a
challenge.
In
this
study,
various
patterned
inverse
opal
(PEDOT:PSS-IO)
films
are
constructed
by
associating
with
structural
color
PCs
based
on
synergistic
effect
morphology/conformation
transition,
which
achieves
integration.
Morphology
transition
PEDOT:PSS-IO
film
alters
from
interconnected
gradual
closure
pore
structure,
accompanied
an
unusual
blueshift
stopband,
attributed
collapse/reconstruction
frame
film.
Conformation
PEDOT
chains
converts
benzene
quinone
accompanying
enhancement
resulted
PSS
removal
secondary
doping.
Under
induction
polar
solvent,
brings
changes
optical/electrical
dual-signals
transition.
This
phenomenon
developed
for
creation
conductive
PC
pattern
using
solvent
(water)
as
ink,
beneficial
work
provides
essential
significance
fabrication
functional
Nanoscale Advances,
Journal Year:
2024,
Volume and Issue:
6(23), P. 5853 - 5860
Published: Jan. 1, 2024
Labels
with
structural
color
based
on
photonic
crystals
(PCs)
have
drawn
significant
attention
due
to
their
unique
emission,
offering
promising
solutions
for
anti-counterfeiting
applications.
However,
meet
the
demands
of
future
high-security
applications,
conventional
labels
require
further
improvement.
This
study
introduces
a
novel
approach
fabricate
highly
encrypted
by
combining
close-packed
and
non-close-packed
monolayers
nanoparticles
(NPs)
onto
adhesive
surfaces.
The
crystals,
arranged
in
specific
geometric
shapes,
exhibit
overt-covert
characteristics.
hidden
label
is
only
revealed
under
external
triggers,
such
as
attaching
or
removing
transparent
cover
film.
principle
modulation
crystal
elucidated,
highlighting
role
packing
density
refractive
index
matching.
Additionally,
scalability
cost-effectiveness
fabrication
process
this
are
expected
facilitate
commercialization.
Various
including
water-responsive
multi-layer
authentication,
demonstrated
also,
which
enables
higher
security
levels
versatility
study.
ACS Applied Materials & Interfaces,
Journal Year:
2024,
Volume and Issue:
16(44), P. 61360 - 61370
Published: Oct. 24, 2024
The
widespread
use
of
counterfeit
goods
caused
significant
damage
to
economy,
personal
data
security,
and
public
health.
There
is
an
urgent
need
develop
innovative
anticounterfeiting
materials
enhance
their
performance.
Anticounterfeiting
labels
based
on
responsive
photonic
crystals
have
been
widely
researched
for
the
inherent
difficulty
in
replicating
delicate
structures
structure
colors.
By
integrating
various
distinct
nanoparticles
(NPs),
it
expected
produce
crystal
patterns
that
offer
more
intricate
color
effects
improved
capabilities.
In
this
work,
we
reported
a
label
with
dynamic
variations
solvent
vapors
pattern
conversions
upon
vapor
liquefication
by
utilizing
three
different
including
d-SiO2,
h-SiO2,
m-SiO2
NPs
as
building
blocks.
This
exhibits
wealth
changes
associated
absorption
time,
rate,
medium,
microstructure
nanoparticles,
offering
diverse
visual
showcasing
interesting
performances.
change
or
conversion
effect
(PC)
realized
through
refractive
index
induced
filling,
which
involves
no
volume
shows
exceptional
durability
repeated
applications.
promising
broad
applications
areas.
